URGENT PLZ HELP find the diameter of circle Q if angle PQR measures 31° and the arc length of PR is 9 cm

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?

What is the radius of the cone in the diagram? round your answer to the nearest whole number